Cylinder-head.



H. W. JACOBS.

CYLINDER HEAD.

APPLICATION FILED PERM, 1911.

1,002,849. Y m6111811 sept. 12,1911.

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HENRY W. JACOBS, OF TOPEKA, KAN-SASL CYLINDER-HEAD.

To all whom it may concern:

Be it known that I, HENRY W. JAcos,-a citizen of the United States, residing in Topeka, in the county of Shawnee and State of Kansas, have invented a certain new andv useful Improvement in Cylinder-Heads, of

which the following is a description, refer` ence being had to the accompanying drawing, which forms a part of my specification.

My inventionl relates to cylinder heads for internal combustion engines, for example 1nconnection with cylinders of engines of the four cycle type; and has for its object the provision of a cylinder head which may be readily machined to shape so as to produce a light and uniform construction.

A further object of my invention is to provide the cylinder head with means secured to or protruding from the outer face thereof, whereby heat may be readily dissipated, as will more fully be understood from the following detailed description.

Another object of my invention is to provide the cylinder head with suitable'means whereby the head may be readily and securely fastened to the cylinder and the cylinder head form a support for the weight of the internal combustion engine and be secured to a frame or base, as will more fully be understood from the following detailed description, wherein reference is had to the accompanying drawing in which Figure l is an end elevation of my improved cylinder head for internal combustion engines. Fig. 2 is a partial side elevation, with the lower half or portion of the head being shown in vertical section. Fig. 3 is a detailed view of one member of the cooling means which is adapted to be secured to or inserted in the wall of the cylinder head.

The cylinder head comprises the body portion 1, preferably made cylindrical in form, and may be machined true to shape; the head being preferably tapered or stepped cylindrically as clearly shown in the drawing, see Fig. 2. The cylinder head l is also preferably provided with the lobes or lugs 2, of which any desired number may be provided; which are adapted to receive the bolts or rods whereby the head may be securely bolted onto the end of the cylinder. I have shown the lugs or lobes 2, 2a provided with the extensions or legs 3, 3, whereby the engine may be supported on the base or frame when desired. These legs or supports 3, 3, may either be made integral with Specification o'f Letters Patent.

Application filed February 24, 1911.

Patented Sept. 12, 1911.

SerialNo. 610,547.

the lobes or lugs 2a, 2a by welding the same together or otherwise secured thereto, or the lsupports may be entirely omitted if desired.

The lobes or lugs 2 as well as the legs or supports Bmay be machined to the desired form.

The cylinder head isprovided with a large circular central opening 11, extending therethrough, whereby a valve cage may be connected to the cylinder head. This aperture a -may be threaded asshown-in Fig. 2. This valve cage may contain either a single valve with direct injection of fuel of a concentric valve arrangement through which the intake and discharge of the explosive mixture may pass. `rThis connection of the valvecage to `the cylinder head may be made by employing the means illustrated in the drawing, or the connection may be made in any other suitable manner,-as for example a yoke which may be clamped in position by engaging the cylinder bolts that are intended to pass through the lobes or lugs 2 and 2a.

After the cylinder head l has been properly machined, it is then provided with the studs or bosses 5 and 6. These studs or bosses are secured in place on the cylinder head in any suitable manner by inserting them in apertures previously drilled in the cylinder head; the bosses are preferably secured in place by the autogenous method of welding. The studs or bosses 5, 5 are provided for the purpose of receiving the spark plugs, after having been properly drilled and threaded; and the stud or boss 6 is intended to receive suitable connections whereby the oil fuel may be injected through the aperture in the cylinder head surrounded by stud or boss 6; these connections or mechanisms however form no part of my invention.

I provide the cylinder head with the air cooling means which is illustrated in the drawing in the nature of fins 7 I prefer to arrange these fins 7 in the tangential or diagonal manner about the outer face of the cylinder head, the fins being made to extend at an angle across the successive steps as shown. Any suitable number of these fins may be employed. I prefer to form these fins in the manner more clearly illustrated in Fig. 3, wherein the one end of the tin is shown shaped to conform to the shape or wall of the tapering cylindrical cylinder head; and these members or fins 7 are preferably inserted into slots 8 with which the cylinderhead has been provided. The slots 8 are machined in the cylinder head and after the fins or members`7 have been inserted therein, the members or fins 7 are preferably secured in place by welding; though any other suitable method may be employe Y v By arranging the radiating members or fins 7, in the manner shown and described,

Vwhich it is subjected, yand at the same time y be ofsufficient density so as to prevent leakage of the confined walls.

I have shown and described what I believe to be the simplest andrpreferred form of my invention, with the radiating members or fins arranged and secured in place in the manner described, but it is apparent that the form of my invention, illustrated, may be altered in certain respectswithout departing from the spirit of my invention, and I do not wish to be understood therefore as limiting myself to the exact construction shown and described, but

gases through the thin v What I claim as my invention and wish to secure by Letters Patent is V:-

l. An elongated cylindrical cylinder head,

the walls whereof are composed of one or more cylindrical steps of successively diminishing diameters whereby a relatively large radiating surface is produced, with heatdissipating members arranged diagonally across said cylindrical steps.

2. An elongated cylinder head having a stepped `wall of diminishing diameter whereby a relatively large radiating surface is produced, heat-dissipating members arranged diagonally across the stepped wall, and radially extending means whereby the head may be secured to the cylinder.

8. Anelongated cylinder head having a stepped wall of diminishing diameter whereby arelatively large radiating surface is produced, said head being provided with an opening therethrough, arranged to receive a valve-cage through which the incoming and outgoing gases of combustion are conveyed, heat dissipating members arranged diagonally across the stepped wall, and means whereby the head may be removably secured to the cylinder.

4:. An .elongatedl open-ended cylinuerhead for internal combustion engines, the walls whereof are stepped and provided with openings therethrough, one of the ends of the head being adapted to receive a valvecage through which the incoming and outgoing gases of combustion are conveyed, while the openings in the side wall are provided with connection-receiving bosses, and heat-radiating members diagonally arranged across the stepped wall of the head intermediate of its ends.

HENRY W. JACOBS.

Witnesses:

FRANK MITCHELL, DAVID H. OWEN.

Copies of lthis patent may be obtained for five oentsreach, by addressing the Commissioner of Patents,

. Washington, D. C. 

